Self-closing valve.



H. c. MONTGOMERY.

SELF GLOSINGVALVE.

APPLIOATION FILED AUG.5, 1910.

981,787. Patented Jan. 17, 1911.

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HENRY C. MONTGOMERY, OF CHICAGO, ILLINOIS.

SELF-CLOSING VALVE.

Specification of Letters Patent.

seiner.

Patented Jan. 17, 1911.

Application led August 5, 1910. Serial No. 575,773.

To all whom it may concern:

Be it known that I, HENRY C. MONT- GOMERY, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Self-Closing Valves, of which the following is a specication.

My invention has relation to a valve, but more particularly to thatclass known as reciprocating valves.

The principal object of my invention comprehends the production of avalve which will bcv self closing and which is so constructed that thepressure on the working parts of the valve, within the valve chamber,will be uniform, or equal, thereby permitting the valve to be easilyoperated, and when closed, to assist in keeping the working parts of thevalve in their relative positions.

A furt-her object of my invention resides in a valve which willeliminate excessive wear and thereby prevent leakage.

In the accompanying drawing whichv forms a part of this specification,and in which like reference numerals indicate corresponding partsthroughout the several views g-Figure 1 is a vertical sectional view ofa basin valve constructed in accordance with my invention. Fig. 2 is across sectional view taken on the line 3-3 of Fig. 1, and Fig. 3 is across sectional view taken on the line 1 -4C of Fig. 1.

In the specific embodiment of my invention shown in the accompanyingdrawing, 1 indicates the valve casing which is formed with a valvechamber 2 and an upper chamber 3. The inlet isindicated at l and thedischarge spout at 5, said inlet 4E and discharge spout 5 communicatingwith the valve chamber 2 and upper chamber 3 respectively, as shown inFig. 1.

The upper chamber 3 and the valve chamber 2 are separated by means of ahorizontal wall 6 formed integral with the valve casing and having anopening 7 formed centrally therethrough. The upper end of the valvecasing is provided with the usual packing box 8 and screw cap 9. FiXedlymounted in the lower end of the valve chamber 2 is a barrel l0, thelower end of which terminates a short distance above the mouth of theinlet 4l. The sides of the barrel 10, as shown in Fig. 2, are cut intosegments of circles as at 11, and through which the water enteringthrough the inlet l passes up into the valve casing 2. The center of thebarrel 10 is provided with a vertical bore 12. The bore 12 does notextend entirely through the barrel and only serves as a guide for thelower reduced end 13 of the valve stem 14C. The walls of the valve stem1d are straight and its upper portion works in the opening 7 of theflange 6, and through the packing box 3 and screw cap 9, and has itsupper end provided with a suitable hand piece 15. Formed transverselythrough the upper portion of the valve stem 1l is a tapering slot orport 1G. The lower end of the slot 16 terminates at a short distancefrom the lower end of the upper, or large, portion of the valve stem,and is adapted to be wholly within the upper chamber 3 of the valvecasing when the valve is closed. Loosely mounted on the lower reducedend 13 of the valve stem 14 there are a pair of semispherical members 17and 17 a which are formed of any suitable non-corrodible material. Themembers 17 and 17a are arranged on the reduced end 13 of the valve stem,so that their flat faces will be presented toward each other, and theyare normally held apart by means of a spring 18 coiled about saidreduced end 13 of the valve stem, with the circular face of the uppermovable member 17 in close contact with the under side of the wall G andthe shoulder 14a, formed on the valve stem 14 by the reduced end 13, andthe circular face of the lower stationary member 17 a in contact withthe upper end of the barrel 10, as shown in Fig. 1. If desired, theunder side of the wall 6 around the opening 7 may be countersunk toconform to the curvature of the member 17, so as to effect a tight litand prevent any possibility of any liquid escaping through the opening7, around the valve stem 14C, into the upper chamber 3, when the valveis closed. The member 17*l serves as an abutment for one end of thespring 18.

In the practical use of my invention, when it is desired to open thevalve, the valve stem 141 is pushed downwardly. The shoulder 14a on thevalve stem, engaging the upper member 17, will cause the same to movetoward the lower member 17 and on the continued downward movement of thevalve stem, the lower end of the slot or port 16 formed therein willpass below the under side of the wall 6, and enter the valve chamber 2.Obviously, this will establish communication between the valve chamber 2and upper chamber 3 and allow the liquid to pass from the valve chamber2' through the port 16 into the upper chamber 3 and out through thedischarge spout 5. By reason of the fact that the sides of the port 16taper, the volume of liquid discharged may be regulated. The dept-h ofthe bore 12 in the barrel 10 is slightly greater than onehalf the lengthof the port 16, so that when the valve stem 11 reaches the limit of itsdownward movement, the port 16 will be partly below and partly above thewall 6, but the area of the port on either side of the wall will beequa-l when the full volume or' liquid will be dischargedv Then it isdesired to close the valve, the Valve stem is released and the spring,together with the pressure within the valve chamber, will return theupper member 17 to its seat, and as this member bears against theshoulder Ha, as it moves upwardly, it will also move the valve stem 14upwardly until it reaches the position shown in Fig. l, and the port 16is wholly within the upper chamber From the` foregoing it will. be seenthat I provide a selfV closing valve which is eX- tremely simple andinexpensivevof construction and will admirably serve the purpose forwhich it is intended.

IVhile I have shown my invention as applied to a basin valve, itV willbe understood that it is also applicable to practically any kind ofvalve and no limitation isimplied by reason of the particular structureshown.

I claim.:

A self-closing valve comprising a valve casing, having a valve chamberand an upper chamber, an inlet communicating with said valve chamber,and a discharge spout communicating with said upper chamber, the wallbetween the chambers having a valve seat, a barrel mounted in the valvechamber and spaced from its lower end, said barrel having its sidesrecessed to establish communication between the inlet and the valvechamber, and provided with a bore, a reciprocatory valve stem passingthrough the aforesaid valve seat, and having its lower end reduced, andadapted to enter the bore in the barrel, said valve stem having aboveits reduced portion a tapered transverse port, a pair or' membersloosely mounted on the reduced portion of said valve stem, and a coiledspring interposed between the members :t'or normally holding one of saidmembers oir the aforesaid valve seat and the other of said membersagainst the upper end of the aforesaid barrel.

In testimony whereof I atiX my signature in presence of two witnesses.

HENRY C. MONTGOMERY. Vitnesses:

H. M. TAYLOR, ARTHUR WESLEY.

